Hello,
I rebooted all the 8 nodes of my Octopus 15.2.13 cluster which runs on Ubuntu 20.04 LTS with cephadm and since then cephadm see 7 nodes as unreachable as you can see below:
[WRN] CEPHADM_HOST_CHECK_FAILED: 7 hosts fail cephadm check
host ceph1d failed check: Can't communicate with remote host `ceph1d`, possibly because python3 is not installed there: [Errno 32] Broken pipe
host ceph1g failed check: Can't communicate with remote host `ceph1g`, possibly because python3 is not installed there: [Errno 32] Broken pipe
host ceph1c failed check: Can't communicate with remote host `ceph1c`, possibly because python3 is not installed there: [Errno 32] Broken pipe
host ceph1e failed check: Can't communicate with remote host `ceph1e`, possibly because python3 is not installed there: [Errno 32] Broken pipe
host ceph1f failed check: Can't communicate with remote host `ceph1f`, possibly because python3 is not installed there: [Errno 32] Broken pipe
host ceph1b failed check: Can't communicate with remote host `ceph1b`, possibly because python3 is not installed there: [Errno 32] Broken pipe
host ceph1h failed check: Failed to connect to ceph1h (ceph1h).
Please make sure that the host is reachable and accepts connections using the cephadm SSH key
To add the cephadm SSH key to the host:
> ceph cephadm get-pub-key > ~/ceph.pub
> ssh-copy-id -f -i ~/ceph.pub root@ceph1h
To check that the host is reachable:
> ceph cephadm get-ssh-config > ssh_config
> ceph config-key get mgr/cephadm/ssh_identity_key > ~/cephadm_private_key
> chmod 0600 ~/cephadm_private_key
> ssh -F ssh_config -i ~/cephadm_private_key root@ceph1h
I checked and SSH is working and python3 is installed on all nodes.
As you can see here "ceph orch host ls" also shows nodes as offline:
# ceph orch host ls
HOST ADDR LABELS STATUS
ceph1a ceph1a _admin mon
ceph1b ceph1b _admin mon Offline
ceph1c ceph1c _admin mon Offline
ceph1d ceph1d Offline
ceph1e ceph1e Offline
ceph1f ceph1f Offline
ceph1g ceph1g mds Offline
ceph1h ceph1h mds Offline
Does anyone have a clue how I can fix that? cephadm seems to be broken...
Thank you for your help.
Regards,
Mabi
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